President of India Pratibha Devisingh Patil (2R) accompanied by India's Chief of army staff (2) arrive on a T-90 tnk to witness Indian Army Exercise Sudarshan Shakti in Barmer distrcit in Rajasthan on December 5, 2011.

President of India Pratibha Devisingh Patil (2R) accompanied by India's Chief of army staff (2) arrive on a T-90 tnk to witness Indian Army Exercise Sudarshan Shakti in Barmer distrcit in Rajasthan on December 5, 2011. (AFP/Sam Panthaky)

Pratibha Devisingh Patil (2R) accompanied by India's Chief of amy saff (2L) arrive on a T-90 Tank to witness Indian Army Exercise Sudarshan Shakti in Barmer distrcit in Rajasthan on December 5, 2011.

Pratibha Devisingh Patil (2R) accompanied by India's Chief of amy saff (2L) arrive on a T-90 Tank to witness Indian Army Exercise Sudarshan Shakti in Barmer distrcit in Rajasthan on December 5, 2011. (AFP)

Pratibha Devisingh Patil (C) is helped by an Indian army officer as she walks down from a T-90 Tank to watch the Indian Army Exercise Sudarshan Shakti in Barmer distrcit in Rajasthan on December 5, 2011.

Pratibha Devisingh Patil (C) is helped by an Indian army officer as she walks down from a T-90 Tank to watch the Indian Army Exercise Sudarshan Shakti in Barmer distrcit in Rajasthan on December 5, 2011. (AFP)